Simultaneous Nadir Overpasses (SNOs) Predictions
Prediction of SNOs between NOAA-21 and LANDSAT-9 Satellite Orbit:
Table of predicted SNOs for the next 14.0 days since TLE Epoch: 6/19/2025
| Index | Date (NOAA-21) | Time (NOAA-21) | Lat,Lon (NOAA-21) | SZA (NOAA-21 ) | Date (LANDSAT-9) | Time (LANDSAT-9) | Lat,Lon (LANDSAT-9) | SZA (LANDSAT-9 ) | Distance(km) | Time Diff (sec) |
| 1 | 06/20/2025 | 14:28:46 | 70.10, -40.88 | 46.62 | 06/20/2025 | 14:29:12 | 70.08, -40.94 | 46.59 | 3.19 | 26 |
| 2 | 06/20/2025 | 15:19:27 | -69.99, 126.61 | 133.50 | 06/20/2025 | 15:18:41 | -70.02, 126.61 | 133.46 | 3.57 | 46 |
| 3 | 06/23/2025 | 05:55:01 | -70.42, -92.92 | 133.03 | 06/23/2025 | 05:56:12 | -70.32, -92.36 | 133.16 | 23.96 | 71 |
| 4 | 06/23/2025 | 06:45:41 | 70.07, 74.94 | 46.60 | 06/23/2025 | 06:45:42 | 70.05, 74.90 | 46.59 | 1.94 | 1 |
| 5 | 06/23/2025 | 07:36:22 | -69.95,-117.57 | 133.52 | 06/23/2025 | 07:35:12 | -69.94,-117.62 | 133.52 | 1.93 | 70 |
| 6 | 06/25/2025 | 22:11:52 | -70.13, 23.30 | 133.27 | 06/25/2025 | 22:12:46 | -70.12, 23.23 | 133.28 | 2.76 | 54 |
| 7 | 06/25/2025 | 23:02:37 | 70.04,-169.26 | 46.64 | 06/25/2025 | 23:02:13 | 70.01,-169.28 | 46.62 | 3.21 | 24 |
| 8 | 06/25/2025 | 23:53:03 | -69.12, -0.61 | 134.31 | 06/25/2025 | 23:51:56 | -69.19, -2.76 | 134.16 | 85.41 | 67 |
| 9 | 06/28/2025 | 14:28:48 | -70.10, 139.11 | 133.18 | 06/28/2025 | 14:29:16 | -70.12, 139.11 | 133.17 | 2.53 | 28 |
| 10 | 06/28/2025 | 15:19:33 | 70.02, -53.46 | 46.74 | 06/28/2025 | 15:18:43 | 70.01, -53.40 | 46.73 | 2.37 | 50 |
| 11 | 07/01/2025 | 05:55:04 | 70.26, 87.31 | 47.15 | 07/01/2025 | 05:56:16 | 70.20, 87.48 | 47.08 | 8.85 | 72 |
| 12 | 07/01/2025 | 06:45:44 | -70.07,-105.08 | 133.04 | 07/01/2025 | 06:45:47 | -70.05,-105.10 | 133.07 | 2.70 | 3 |
| 13 | 07/01/2025 | 07:36:27 | 69.89, 62.50 | 46.77 | 07/01/2025 | 07:35:14 | 69.93, 62.38 | 46.83 | 6.51 | 73 |
Figure of NOAA-21 and LANDSAT-9 satellite orbits during SNOs since TLE Epoch: 6/19/2025
Download SNOs between NOAA-21 and LANDSAT-9 since TLE EPOCH: 06/19/2025 in txt file.
Historial Predications of SNOs between NOAA-21 and LANDSAT-9